Granted, David is clearly the thinner, hotter brother, but check out the nose shape, the eyebrow shape, and the general eyes shape. Especially genetically identical (allegedly) is the hairline, don't you think?
Now, if you're still with me, what about these two as siblings:
I think a lot more of you are going to think I'm crazy on this one, but check out the general face shape and the noses. Paternal twins, I tell you.
So, am I crazy or dead on? (Dead on, I think.)